GitPython was originally written by Michael Trier.
GitPython 0.2 was partially (re)written by Sebastian Thiel, based on 0.1.6 and git-dulwich.

Contributors are:

-Michael Trier <mtrier _at_ gmail.com>
-Alan Briolat
-Florian Apolloner <florian _at_ apolloner.eu>
-David Aguilar <davvid _at_ gmail.com>
-Jelmer Vernooij <jelmer _at_ samba.org>
-Steve Frécinaux <code _at_ istique.net>
-Kai Lautaportti <kai _at_ lautaportti.fi>
-Paul Sowden <paul _at_ idontsmoke.co.uk>
-Sebastian Thiel <byronimo _at_ gmail.com>
-Jonathan Chu <jonathan.chu _at_ me.com>
-Vincent Driessen <me _at_ nvie.com>

Portions derived from other open source works and are clearly marked.